6HC9

STRUCTURE OF GLUA2 LIGAND-BINDING DOMAIN (S1S2J-L504Y-N775S) IN COMPLEX WITH GLUTAMATE AND TDPAM02 AT 2.4 A RESOLUTION.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

wwPDB Validation 3D Report Full Report



Literature

Crystal Structures of Potent Dimeric Positive Allosteric Modulators at the Ligand-Binding Domain of the GluA2 Receptor.

Laulumaa, S.Hansen, K.V.Masternak, M.Drapier, T.Francotte, P.Pirotte, B.Frydenvang, K.Kastrup, J.S.

(2019) ACS Med Chem Lett 10: 243-247

  • DOI: 10.1021/acsmedchemlett.8b00369
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The ionotropic glutamate receptor GluA2 is considered to be an attractive target for positive allosteric modulation for the development of pharmacological tools or cognitive enhancers. Here, we report a detailed structural characterization of two rec ...

    The ionotropic glutamate receptor GluA2 is considered to be an attractive target for positive allosteric modulation for the development of pharmacological tools or cognitive enhancers. Here, we report a detailed structural characterization of two recently reported dimeric positive allosteric modulators, TDPAM01 and TDPAM02, with nanomolar potency at GluA2. Using X-ray crystallography, TDPAM01 and TDPAM02 were crystallized in the ligand-binding domain of the GluA2 flop isoform as well as in the flip-like mutant N775S and the preformed dimer L504Y-N775S. In all structures, one modulator molecule binds at the dimer interface with two characteristic hydrogen bonds being formed from the modulator to Pro515. Whereas the GluA2 dimers and modulator binding mode are similar when crystallized in the presence of l-glutamate, the shape of the binding site differs when no l-glutamate is present. TDPAM02 has no effect on domain closure in both apo and l-glutamate bound GluA2 dimers compared to structures without modulator.


    Organizational Affiliation

    Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, DK-2100 Copenhagen, Denmark.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glutamate receptor 2,
A, B
264Rattus norvegicusMutation(s): 2 
Gene Names: Gria2Glur2
Find proteins for P19491 (Rattus norvegicus)
Go to UniProtKB:  P19491
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FXW
Query on FXW

Download CCD File 
B
6,6'-(ETHANE-1,2-DIYL)BIS(4-CYCLOPROPYL-3,4-DIHYDRO-2H-1,2,4-BENZOTHIADIAZINE 1,1-DIOXIDE)
C22 H26 N4 O4 S2
TVWVZMLPANTKEA-UHFFFAOYSA-N
 Ligand Interaction
PGE
Query on PGE

Download CCD File 
A
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
 Ligand Interaction
GLU
Query on GLU

Download CCD File 
A, B
GLUTAMIC ACID
C5 H9 N O4
WHUUTDBJXJRKMK-VKHMYHEASA-N
 Ligand Interaction
PEG
Query on PEG

Download CCD File 
A, B
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 97.656α = 90
b = 121.942β = 90
c = 47.442γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-04-03
    Type: Initial release